B2312

WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: B2312: Power Window Switch Malfunction
B2312 - Power Window Switch Malfunction

DESCRIPTION

The power window regulator motor consists of the motor, regulator and ECU. The power window regulator motor is driven by operating the power window switch. This DTC is output when the ECU built into the regulator motor determines that the power window switch is stuck.

NOTICE:
* When the power window regulator motor is reinstalled or replaced, the power window control system must be initialized.
* After a door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the AUTO UP function is used. In such cases, the AUTO UP function can be resumed by repeating the following operation at least 5 times:
(a) Close the power window by fully pulling up the power window switch and holding it in the AUTO UP position.
(b) Open the power window by fully pushing down the power window switch.

Power Window Regulator Master Switch





Front Power Window Regulator Motor LH





Front Power Window Regulator Motor RH





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK LIN COMMUNICATION SYSTEM

(a) Check for LIN communication system DTCs related to the power window control system Initial Inspection and Diagnostic Overview.

OK:

LIN communication system DTCs are not output.

NG -- GO TO LIN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
OK -- Continue to next step.

2. CHECK DTC

(a) Check where DTC B2312 is output from.

Result





C -- READ VALUE USING TECHSTREAM (FRONT POWER WINDOW REGULATOR MOTOR RH)

B -- READ VALUE USING TECHSTREAM (FRONT POWER WINDOW REGULATOR MOTOR LH)
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM (POWER WINDOW REGULATOR MASTER SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Master Switch / Data List /

(e) According to the display on the Techstream, read the Data List.

Master Switch





OK:

The Techstream display changes normally when master switch is operated.

NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Removal

OK -- END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE)

4. READ VALUE USING TECHSTREAM (FRONT POWER WINDOW REGULATOR MOTOR LH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / D-Door Motor / Data List /

(e) According to the display on the Techstream, read the Data List.

D-Door Motor





OK:

The Techstream display changes normally when master switch is operated.

NG -- CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH - BODY GROUND)

OK -- END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE)

5. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH - BODY GROUND)

(a) Disconnect the M2 power window regulator master switch connector.





(b) Disconnect the M3 power window regulator motor assembly LH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the power window regulator motor assembly LH connector.

(e) Reconnect the power window regulator master switch assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Removal

6. READ VALUE USING TECHSTREAM (FRONT POWER WINDOW REGULATOR MOTOR RH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / P-Door Motor / Data List /

(e) According to the display on the Techstream, read the Data List.

P-Door Motor





OK:

The Techstream display changes normally when master switch is operated.

NG -- INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

OK -- END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE)

7. INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

(a) Remove the front power window regulator switch assembly RH Removal.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Reinstall the power window regulator switch assembly RH.

NG -- REPLACE FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Removal
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR SWITCH RH - BODY GROUND)

(a) Disconnect the L2 power window regulator switch assembly RH connector.





(b) Disconnect the L3 power window regulator motor assembly RH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the power window regulator motor assembly RH connector.

(e) Reconnect the power window regulator switch assembly RH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Removal